Polyaluminium Chloride (PAC) is not a single monolithic product but rather a family of inorganic polymers with varying properties that make them suitable for diverse applications. Understanding these different grades is crucial for procurement managers and technical specialists to select the most effective and cost-efficient product for their specific needs. When considering to buy Polyaluminium Chloride, knowing the distinctions between grades ensures optimal performance.

The primary differentiators among PAC grades include their Al2O3 content and basicity. Al2O3 content, often expressed as a percentage, indicates the amount of aluminum oxide in the compound, which directly correlates with its coagulating power. Higher Al2O3 content generally means greater effectiveness. Basicity, on the other hand, refers to the degree of neutralization of the aluminum chloride by aluminum hydroxide, influencing the product's charge density and hydrolysis rate. Different basicity levels are optimized for varying water conditions and treatment goals.

Industrial Grade PAC typically has a lower Al2O3 content (e.g., 28-29%) and can have a higher basicity (e.g., 70-90%). This grade is widely used for treating industrial wastewater from sectors like textiles, paper, and mining. Its robust performance in handling high turbidity and complex pollutants makes it a cost-effective solution for these challenging effluents. When sourcing Polyaluminium Chloride for industrial use, buyers often look for suppliers who offer customized basicity levels to match specific wastewater characteristics.

For Drinking Water Treatment, a higher purity grade of PAC is required. These grades often feature higher Al2O3 content (e.g., 30% or more) and controlled basicity (e.g., 40-60%). Crucially, drinking water grade PAC must meet stringent standards for low levels of impurities, particularly heavy metals like arsenic, lead, and cadmium. Manufacturers like NINGBO INNO PHARMCHEM CO.,LTD. ensure that their drinking water grade PAC complies with relevant national and international health and safety regulations. The white powder variant is often preferred for its higher purity.

Other specialized grades exist, such as liquid PAC, which offers convenience in automatic dosing systems, and PAC with specific characteristics for applications like petroleum additives or precision casting. When evaluating a Polyaluminium Chloride supplier, inquire about the availability of these different grades and their specific technical data sheets. Understanding the nuances of each grade allows buyers to make informed purchasing decisions, ensuring they get the best value and performance for their investment.

In conclusion, selecting the correct grade of Polyaluminium Chloride is fundamental to achieving efficient and compliant water treatment. By understanding the implications of Al2O3 content, basicity, and purity, buyers can effectively leverage PAC's capabilities across a spectrum of applications, from heavy industrial wastewater to safe drinking water.